Published in
Wiley, Arthritis and Rheumatism, 3(48), p. 625-630, 2003
DOI: 10.1002/art.10824
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An index of the three Core Data Set patient questionnaire measures distinguishes efficacy of active treatment from that of placebo as effectively as the American College of Rheumatology 20% response criteria (ACR20) or the Disease Activity Score (DAS) in a rheumatoid arthritis clinical trial
Journal article published in 2003 by
T. Pincus,
V. Strand,
G. Koch,
I. Amara,
B. Crawford,
F. Wolfe,
S. Cohen,
D. Felson 
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